Steel construction with heavy non-slip rubber treads. Three spring loaded wheels allow step to glide over floor, yet sit down firmly on rubber stops when load is applied. Features & Benefits:Step Heights: 220, 420mm.Base Diameter: Ø430mm.Capacity: 150kg.Steel construction with heavy non-slip rubber treads.Three spring loaded wheels allow step to glide over floor, yet sit down firmly on rubber stops when load is applied.Model No. KS1 Specifications: Model No KS1 Base Size: Ø430mm Brand: Sealey Material: Steel Maximum Capacity: 150kg Nett Weight: 4.8kg Step Heights: 220, 420mm Top Step Size: Ø280mm